Columbium
Columbium
-1
Section::::History.:Naming the element.

Niobium
21275
Niobous
Niobic
Element 41
Niobium
Niobium
-1
Section::::Abstract.
Niobium
21275
Nicobium
Niob
Niob
-1
Section::::Abstract.
Niobium
21275
niobic
niob
niobium
nicobium
niobous
columbium
element 41